Poblem solved about shifted layers!!Quote
AndrewBCN
I believe the formula to calculate current is slightly different for the TMC2100 drivers, in this video they have Vref set @ 1.1V:
[www.youtube.com]
Also, did you configure them for spreadCycle mode or otherwise?
I've set Vref @ 1.1 and now all work very well!!
I suggest you to test TMC2100!!